Sony BVM-L230 Trimaster User manual

LCD VIDEO MONITOR
BVM-L230
CONTROLLER ATTACHMENT STAND
BKM-37H
SERVICE MANUAL
1st Edition (Revised 2)

BVM-L230
!WARNING
This manual is intended for qualified service personnel only.
To reduce the risk of electric shock, fire or injury, do not perform any servicing other than that
contained in the operating instructions unless you are qualified to do so. Refer all servicing to
qualified service personnel.
!WARNUNG
Die Anleitung ist nur für qualifiziertes Fachpersonal bestimmt.
Alle Wartungsarbeiten dürfen nur von qualifiziertem Fachpersonal ausgeführt werden. Um die
Gefahr eines elektrischen Schlages, Feuergefahr und Verletzungen zu vermeiden, sind bei
Wartungsarbeiten strikt die Angaben in der Anleitung zu befolgen.Andere als die angegeben
Wartungsarbeiten dürfen nur von Personen ausgeführt werden, die eine spezielle Befähigung
dazu besitzen.
!AVERTISSEMENT
Ce manual est destiné uniquement aux personnes compétentes en charge de l’entretien.Afin
de réduire les risques de décharge électrique, d’incendie ou de blessure n’effectuer que les
réparations indiquées dans le mode d’emploi à moins d’être qualifié pour en effectuer d’autres.
Pour toute réparation faire appel à une personne compétente uniquement.
When using a modular jack cable:
For safety, do not connect to the connector for peripheral
device wiring that might have excessive voltage.
5. Install the equipment while taking the operating
temperature of the equipment into consideration
For the operating temperature of the equipment, refer
to the specifications of the Operation Manual.
6. When performing the installation, keep the
following space away from walls in order to
obtain proper exhaust and radiation of heat.
Above and below: 4.4 cm (1.7 inches) or more
Attention-when the product is installed in Rack:
1. Prevention against overloading of branch circuit
When this product is installed in a rack and is
supplied power from an outlet on the rack, please
make sure that the rack does not overload the supply
circuit.
2. Providing protective earth
When this product is installed in a rack and is
supplied power from an outlet on the rack, please
confirm that the outlet is provided with a suitable
protective earth connection.
3. Internal air ambient temperature of the rack
When this product is installed in a rack, please make
sure that the internal air ambient temperature of the
rack is within the specified limit of this product.
4. Prevention against achieving hazardous
condition due to uneven mechanical loading
When this product is installed in a rack, please make
sure that the rack does not achieve hazardous
condition due to uneven mechanical loading.

1
BVM-L230
Table of Contents
Manual Structure
Purpose of this manual ................................................................. 3
Related manuals ........................................................................... 3
Trademarks ................................................................................... 3
1. Service Overview
1-1. Appearance Figure ..........................................................1-1
1-2. Board Location ...............................................................1-1
1-3. Disassembly ....................................................................1-2
1-3-1. Cabinet ..................................................................1-2
1-3-2. Bottom Cabinet .....................................................1-3
1-3-3. Bezel Assembly.....................................................1-4
1-3-4. T Board/ST1 Board ...............................................1-5
1-3-5. G Board .................................................................1-6
1-3-6. B Board .................................................................1-7
1-3-7. YA Board/YB Board/YC Board ...........................1-8
1-3-8. DC Fan ..................................................................1-9
1-3-9. LCD Panel Module/T-CON Board .....................1-10
1-3-10. LMD1 Board .......................................................1-11
1-3-11. LMD2 Board .......................................................1-12
1-3-12. LCD Unit .............................................................1-13
1-4. Packing the LCD Unit ..................................................1-14
1-5. Attaching BKM-37H ....................................................1-15
1-6. Procedure when Replacing the LCD Unit ....................1-18
1-6-1. CD-R Directory ...................................................1-18
1-6-2. Data Transfer Procedure......................................1-18
1-7. Procedure for Replacing the B Board/LMD2 Board ....1-21
1-7-1. Preparation ..........................................................1-21
1-7-2. B Board Data Update ..........................................1-25
1-7-3. LMD2 Board Data Update ..................................1-29
1-8. Version Upgrade ...........................................................1-31
1-8-1. Required Equipment............................................1-31
1-8-2. About Memory Stick ...........................................1-31
1-8-3. Check of Memory Stick Data ..............................1-33
1-8-4. Software Version Upgrade
- In the case that the software version of
this unit is earlier than Ver. 1.3 ..........................1-36
1-8-5. Kernel Version Upgrade - Software version of
this unit is Ver. 1.3 or later ..................................1-37
1-8-6. Controller Kernel Version Upgrade
- Software version of this unit is earlier than
Ver. 1.3 ................................................................1-38
1-8-7. FPGA Version Upgrade
- Software version of this unit is earlier than
Ver. 1.3 ................................................................1-39
1-9. Recovery from Version Upgrade Failure .....................1-40
1-9-1. Judging Method of Version Upgrade Failure......1-40
1-9-2. Recovery Method ................................................1-41
1-9-3. Recovery Method for Kernel/FPGA Version
Upgrade Failure (this unit) ..................................1-48
1-9-4. Recovery Method for Kernel Version Upgrade
Failure (controller) ..............................................1-50
1-10. Uniformity Adjustment.................................................1-52
1-10-1. Uniformity Adj Menu..........................................1-52
1-11. Backlight Menu ............................................................1-53
1-11-1. SYSTEM .............................................................1-53
1-11-2. LED_DRIVE etc .................................................1-54
1-11-3. SENSOR..............................................................1-55
1-11-4. ERROR................................................................1-57
1-12. Maintenance Menu .......................................................1-58
1-12-1. Software Version Up
- Software version of this unit is earlier than
Ver. 1.3 ................................................................1-59
1-12-2. Restore Factory Set All .......................................1-59
1-12-3. Restore System Data ...........................................1-59
1-12-4. 1035/60I Mode ....................................................1-60
1-12-5. Low Latency........................................................1-60
1-12-6. Main Board..........................................................1-60
1-12-7. Backlight .............................................................1-60
1-12-8. Uniformity Adj ....................................................1-61
1-13. Lead-free Solder ...........................................................1-61
1-14. About LCD Unit/T-CON Board ...................................1-61
2. Circuit Description
2-1. G Board...........................................................................2-1
2-1-1. Operation during Power-on Sequence...................2-1
2-1-2. Circuit Operation...................................................2-1
2-1-3. Overvoltage Protection Circuit and Overcurrent
Protection Circuit ..................................................2-3
2-2. LMD1 Board...................................................................2-4
2-2-1. Green LED Power Block.......................................2-5
2-2-2. Blue LED Power Block.........................................2-5
2-2-3. Way to Change G_OUT and B_OUT Voltages ....2-5
2-2-4. ON/OFF Control of Green and
Blue LED Power Supplies.....................................2-6

2BVM-L230
E. Board Layouts
B (SUFFIX: -12)............................................................ E-2
B (SUFFIX: -13)............................................................ E-6
G .................................................................................. E-10
LMD1 .......................................................................... E-12
ST1............................................................................... E-13
YA................................................................................ E-13
YB ................................................................................ E-13
YC ................................................................................ E-13
LMD2 .......................................................................... E-14
T ................................................................................... E-16
2-2-5. Overvoltage and Overcurrent Protection
Circuits ..................................................................2-6
2-2-6. BL_12V .................................................................2-6
2-3. LMD2 Board...................................................................2-7
2-3-1. Power Circuit.........................................................2-7
2-3-2. LED Driver Circuit................................................2-9
2-3-3. H8 Microcomputer Operating Environment .......2-11
2-3-4. External Interface ................................................2-11
2-3-5. Reset Circuit ........................................................2-11
2-4. S1, S2, and S3 Boards...................................................2-12
2-4-1. Outline .................................................................2-12
2-4-2. Circuit Operation .................................................2-14
2-4-3. Others ..................................................................2-15
A. Semiconductor Pin Assignments
B. Spare Parts
B-1. Notes on Repair Parts .................................................... B-1
B-2. Exploded Views ............................................................. B-2
B-3. Electrical Parts List ...................................................... B-11
B-4. Packing Materials & Supplied Accessories ................. B-89
C. Block Diagrams
Overall ........................................................................... C-1
D. Schematic Diagrams
B (SUFFIX: -12) ............................................................D-2
B (SUFFIX: -13) ..........................................................D-46
G ..................................................................................D-89
LMD1 ..........................................................................D-91
LMD2 ..........................................................................D-93
ST1...............................................................................D-98
T ...................................................................................D-99
YA..............................................................................D-101
YB ..............................................................................D-101
YC ..............................................................................D-101
Frame Wiring .............................................................D-102

3
BVM-L230
Manual Structure
Purpose of this manual This manual is the Service Manual of the LCD Video Monitor BVM-L230.
This manual contains the service overview, circuit description, semiconductor pin
assignments, spare parts, block diagram, schematic diagrams, and board layouts.
Related manuals In addition to this Service Manual the following manual is provided.
..
..
.“Semiconductor Pin Assignments” CD-ROM (Available on request)
This “Semiconductor Pin Assignments” CD-ROM allows you to search for
semiconductors used in Broadcast and Professional equipment.
This manual contains a complete list of semiconductors and their ID Nos., and
thus should be used together with the CD-ROM.
Part number: 9-968-546-06
Trademarks Trademarks and registered trademarks used in this manual are follows.
.Ethernet is a registered trademark of Xerox Corporation.
.Windows is a registered trademark of Microsoft Corporation in the United States and
Other countries.
.Memory Stick is a trademark of Sony Corporation.
.HyperTerminal is a registered trademark of Hilgraeve Inc..
Other system names, product names, and company names appearing in this manual
are trademarks or registered trademarks of their respective holders.

1-1
BVM-L230
Section 1
Service Overview
1-1. Appearance Figure
1-2. Board Location
DC fans
LMD1 board
LMD2 board
ST1 board
B board
T board
G board
YA board
YB board
YC board
S1 board
S2 board
S3 board
LCD panel module/T-CON board

1-2 BVM-L230
1-3. Disassembly
m
.In this section, remove parts in the order of numbers shown in the figure.
.When removing/installing the cabinet and replacing the board, place the unit on the conductive cushion.
1-3-1. Cabinet
!. Two screws
(B4 x6)
!\ Seventeen
screws
(BVTT3 x8)
8Side cabinet (L)
!; Two hexagonal
screws
@[ Gasket (A)
@- Gasket (A) @= Gasket (B)
2Blank panel assembly
@/ Bracket (B) assembly
!, Two spring
washers
!' Two connector
screws
S/N 2001076 to 2001999
S/N 2501056 to 2501999
S/N 2100001 and Higher
Conductive cushion
4Two screws
(PSW4 x8)
9Two screws
(B4 x6)
!- Two screws
(B4 x6)
6Rear cabinet
1Eight panel securing
screws
0Side cabinet (R)
!= Top cabinet
!] G case
assembly
5
Two screws
(PSW4 x8)
3Nine screws
(PSW4 x8)
![ Two screws
(B4 x6)
7Two screws
(B4 x6)
Upper side

1-3
BVM-L230
1-3-2. Bottom Cabinet
.Remove the cabinet. (Refer to Section 1-3-1.)
CN6002 CN6001
Conductive cushion
G board
1Screw
(PSW3 x6)
3Four screws
(B4 x6)
4Two screws
(B4 x6)
2AC block assembly
8Bottom cabinet assembly
5VESA bracket assembly
7Two screws
(B4 x6)
6Four screws
(B4 x6)
Upper side

1-4 BVM-L230
1-3-3. Bezel Assembly
.Remove the cabinet. (Refer to Section 1-3-1.)
.Remove the bottom cabinet. (Refer to Section 1-3-2.)
Conductive cushion
1Two screws
(B4 x6)
7Bezel assembly
7Bezel assembly
9Mask assembly
3Two harnesses
2Two screws
(B4 x6)
4Two harness
5Harness
m
.When removing the main frame assembly, be sure to work with more than two
persons.
.Place the removed chassis assembly on the conductive cushion.
6Hold the two side frame and remove
the main frame assembly.
8Remove the four
hooks, then remove
the mask assembly.
Upper side

1-5
BVM-L230
1-3-4. T Board/ST1 Board
.Remove the cabinet. (Refer to Section 1-3-1.)
.Remove the bottom cabinet. (Refer to Section 1-3-2.)
Conductive cushion
2ST1 board
CN300
ST1 bracket
3Five screws
(PSW3 x6)
4Option case assembly
8Plate T
9T board
6T bracket assembly
7Five screws
(PSW3 x8)
8T board
7Five screws
(PSW3 x8)
5Two screws
(PSW3 x6)
1Screw
(PSW3 x6)
S/N 2000009 to 2001075
S/N 2501001 to 2501055
S/N 2001076 to 2001999
S/N 2501056 to 2501999
S/N 2100001 and Higher
6T bracket assembly
Upper side

1-6 BVM-L230
1-3-5. G Board
.Remove the cabinet. (Refer to Section 1-3-1.)
.Remove the bottom cabinet. (Refer to Section 1-3-2.)
Conductive cushion
1Six screws
(PSW3 x6)
2G board
3Insulated plate
CN6602
CN6606
CN6601
CN6600
CN6501
CN6605
CN6604
CN6603
Upper side

1-7
BVM-L230
1-3-6. B Board
.Remove the cabinet. (Refer to Section 1-3-1.)
.Remove the bottom cabinet. (Refer to Section 1-3-2.)
.Remove the T board. (Refer to Section 1-3-4.)
.Remove the G board. (Refer to Section 1-3-5.)
CN8400
CN801
CN7701
CN8201
CN6901
CN6001
CN6101
CN900
CN600
CN800
CN6904 CN6903
CN6902
6B board
!- Radiation sheet (C)
S/N 2001076 to 2001999
S/N 2501056 to 2501999
S/N 2100001 and Higher
CN6802
Upper side
Conductive cushion
3Ten screws
(PSW3 x6)
1Two screws
(PSW3 x6)
2Bracket
6B board
7Radiation sheet
8Radiation sheet (A)
9Radiation sheet (B)
0Radiation
sheet (C)
4Cover (B)
5Six screws
(PSW3 x6)

1-8 BVM-L230
1-3-7. YA Board/YB Board/YC Board
.Remove the cabinet. (Refer to Section 1-3-1.)
.Remove the bottom cabinet. (Refer to Section 1-3-2.)
.Remove the bezel assembly. (Refer to Section 1-3-3.)
Conductive cushion
3Harness
6Harness
!- Harness
8Bracket
Bezel assembly
7Two screws
(PSW3 x6)
9Two screws
(PSW3 x6)
4Screw
(BVTP3 x10)
2YA board 0YC board
5YB board
1Two hooks
Upper side

1-9
BVM-L230
1-3-8. DC Fan
.Remove the cabinet. (Refer to Section 1-3-1.)
.Remove the bottom cabinet. (Refer to Section 1-3-2.)
.Remove the T board. (Refer to Section 1-3-4.)
.Remove the G board. (Refer to Section 1-3-5.)
.Remove the B board. (Refer to Section 1-3-6.)
Conductive cushion
LCD panel module
4Three harnesses
5Three harnesses
3Main frame assembly
7Front stay assembly
!- DC fans
0Six screws
(PSW3 x20)
6Two screws
(B4 x6)
2Three screws
(B4 x6)
1Three screws
(B4 x6)
8Six screws
(PSW3 x6)
9Fan brackets
Upper side

1-10 BVM-L230
1-3-9. LCD Panel Module/T-CON Board
n
Before starting the procedure, check Section 1-14.
.Remove the cabinet. (Refer to Section 1-3-1.)
.Remove the bottom cabinet. (Refer to Section 1-3-2.)
.Remove the bezel assembly. (Refer to Section 1-3-3.)
.Remove the T board. (Refer to Section 1-3-4.)
.Remove the G board. (Refer to Section 1-3-5.)
.Remove the B board. (Refer to Section 1-3-6.)
.Remove the DC fan. (Refer to Section 1-3-8.)
Conductive cushion
1Card spacer
2T-COM cover
6T-CON shield
8T-CON board
9T-CON bracket
5LCD panel module
3Flexible flat cable
4Five screws
(PSW3 x6)
7Six screws
(PSW3 x6)
Upper side

1-11
BVM-L230
1-3-10. LMD1 Board
.Remove the cabinet. (Refer to Section 1-3-1.)
.Remove the bottom cabinet. (Refer to Section 1-3-2.)
.Remove the bezel assembly. (Refer to Section 1-3-3.)
.Remove the T board. (Refer to Section 1-3-4.)
.Remove the G board. (Refer to Section 1-3-5.)
.Remove the B board. (Refer to Section 1-3-6.)
.Remove the DC fan. (Refer to Section 1-3-8.)
Conductive cushion
1Five screws
(PSW3 x6)
3Four screws
(PSW3 x6)
CN6250 CN6251
2LMD1 board
5Miniature card spacer
6Insulating sheet
(LMD-1)
4LMD-1 bracket
Upper side

1-12 BVM-L230
1-3-11. LMD2 Board
.Remove the cabinet. (Refer to Section 1-3-1.)
.Remove the bottom cabinet. (Refer to Section 1-3-2.)
.Remove the bezel assembly. (Refer to Section 1-3-3.)
.Remove the T board. (Refer to Section 1-3-4.)
.Remove the G board. (Refer to Section 1-3-5.)
.Remove the B board. (Refer to Section 1-3-6.)
.Remove the DC fan. (Refer to Section 1-3-8.)
.Remove the LCD panel module. (Refer to Section 1-3-9.)
Conductive cushion
1Four screws
(PSW3 x6)
CN6602
CN6901
CN6701
CN6401
CN6403
CN6702
CN6605
CN6608
CN6603
CN6606
CN6900
CN6902
CN6700
CN6400
CN6609
CN6600
CN6607
CN6604
CN6601
2LMD2 board
Upper side

1-13
BVM-L230
1-3-12. LCD Unit
n
When replacing the LCD unit, it is required to update the adjustment data file written in the B board. For
details, refer to Section 1-6.
.Remove each part. (Refer to Sections 1-3-1 to 1-3-8.)
Conductive cushion
LCD unit
3Three screws
(PSW4 x8)
1Three screws
(PSW4 x8)
2Side frame assembly (L)
4Side frame assembly (R)
Upper side

1-14 BVM-L230
1-4. Packing the LCD Unit
.Return the LCD unit to the address specified separately.
.When returning the LCD unit, be sure to attach the cover to protect the board on the LCD unit.
Sony part number: 3-279-741-01
Part name: Cover
2Three screws
(PSW4 x8)
1Three screws
(PSW4 x8)
3Cover
LCD unit